/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:34:52,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:34:52,523 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 16:34:52,554 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:34:52,555 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:34:52,556 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:34:52,556 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:34:52,557 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:34:52,557 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:34:52,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:34:52,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:34:52,562 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:34:52,562 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:34:52,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:34:52,563 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:34:52,563 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:34:52,563 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:34:52,564 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:34:52,564 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:34:52,564 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:34:52,564 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:34:52,565 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:34:52,565 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:34:52,565 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:34:52,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:34:52,566 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:34:52,566 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:34:52,566 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:34:52,566 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:34:52,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:34:52,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:34:52,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:34:52,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:34:52,820 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:34:52,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:34:52,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:34:52,850 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:34:52,850 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:34:52,851 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-11-17 16:34:54,118 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:34:54,323 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:34:54,324 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c [2023-11-17 16:34:54,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937a36583/7811f413e7d642feb04fbb444b9c7453/FLAG98e2301cc [2023-11-17 16:34:54,351 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/937a36583/7811f413e7d642feb04fbb444b9c7453 [2023-11-17 16:34:54,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:34:54,355 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:34:54,358 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:34:54,358 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:34:54,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:34:54,363 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbcae7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54, skipping insertion in model container [2023-11-17 16:34:54,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,388 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:34:54,536 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2031,2044] [2023-11-17 16:34:54,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:34:54,548 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:34:54,565 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy11.wvr.c[2031,2044] [2023-11-17 16:34:54,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:34:54,573 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:34:54,574 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:34:54,580 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:34:54,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54 WrapperNode [2023-11-17 16:34:54,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:34:54,582 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:34:54,582 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:34:54,582 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:34:54,589 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,596 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,620 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-17 16:34:54,621 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:34:54,622 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:34:54,622 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:34:54,622 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:34:54,630 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,632 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,636 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,639 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:34:54,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:34:54,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:34:54,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:34:54,648 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (1/1) ... [2023-11-17 16:34:54,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:34:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:34:54,690 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 16:34:54,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 16:34:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:34:54,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:34:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:34:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:34:54,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:34:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:34:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:34:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:34:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:34:54,719 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:34:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:34:54,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:34:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:34:54,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:34:54,721 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 16:34:54,806 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:34:54,808 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:34:54,953 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:34:54,962 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:34:54,962 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 16:34:54,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:34:54 BoogieIcfgContainer [2023-11-17 16:34:54,964 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:34:54,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:34:54,971 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:34:54,974 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:34:54,974 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:34:54" (1/3) ... [2023-11-17 16:34:54,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0266bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:34:54, skipping insertion in model container [2023-11-17 16:34:54,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:34:54" (2/3) ... [2023-11-17 16:34:54,975 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d0266bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:34:54, skipping insertion in model container [2023-11-17 16:34:54,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:34:54" (3/3) ... [2023-11-17 16:34:54,976 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2023-11-17 16:34:54,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:34:54,992 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:34:54,992 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:34:55,044 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 16:34:55,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 186 flow [2023-11-17 16:34:55,124 INFO L124 PetriNetUnfolderBase]: 6/84 cut-off events. [2023-11-17 16:34:55,124 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:34:55,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-17 16:34:55,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 86 transitions, 186 flow [2023-11-17 16:34:55,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 75 transitions, 162 flow [2023-11-17 16:34:55,137 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:34:55,151 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 76 places, 75 transitions, 162 flow [2023-11-17 16:34:55,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 76 places, 75 transitions, 162 flow [2023-11-17 16:34:55,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 75 transitions, 162 flow [2023-11-17 16:34:55,174 INFO L124 PetriNetUnfolderBase]: 6/75 cut-off events. [2023-11-17 16:34:55,175 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:34:55,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 75 events. 6/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-11-17 16:34:55,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 648 [2023-11-17 16:34:57,090 INFO L134 LiptonReduction]: Checked pairs total: 621 [2023-11-17 16:34:57,090 INFO L136 LiptonReduction]: Total number of compositions: 70 [2023-11-17 16:34:57,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:34:57,110 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7700e8b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:34:57,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 16:34:57,115 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:34:57,115 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-17 16:34:57,115 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:34:57,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:57,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:57,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:57,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1873540470, now seen corresponding path program 1 times [2023-11-17 16:34:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:57,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779076256] [2023-11-17 16:34:57,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:57,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:57,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:57,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:57,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779076256] [2023-11-17 16:34:57,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779076256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:34:57,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:34:57,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:34:57,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652762819] [2023-11-17 16:34:57,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:34:57,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:34:57,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:34:57,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:34:57,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:34:57,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:57,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:57,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:34:57,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:57,792 INFO L124 PetriNetUnfolderBase]: 58/106 cut-off events. [2023-11-17 16:34:57,792 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-17 16:34:57,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 58/106 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 247 event pairs, 11 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 180. Up to 48 conditions per place. [2023-11-17 16:34:57,795 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 26 selfloop transitions, 10 changer transitions 5/41 dead transitions. [2023-11-17 16:34:57,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 41 transitions, 185 flow [2023-11-17 16:34:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:34:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:34:57,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 448 transitions. [2023-11-17 16:34:57,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41025641025641024 [2023-11-17 16:34:57,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 448 transitions. [2023-11-17 16:34:57,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 448 transitions. [2023-11-17 16:34:57,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:57,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 448 transitions. [2023-11-17 16:34:57,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.0) internal successors, (448), 7 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:57,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:57,824 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:57,826 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 7 states and 448 transitions. [2023-11-17 16:34:57,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 41 transitions, 185 flow [2023-11-17 16:34:57,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 41 transitions, 171 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:34:57,830 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 101 flow [2023-11-17 16:34:57,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=101, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-11-17 16:34:57,835 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 7 predicate places. [2023-11-17 16:34:57,835 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 101 flow [2023-11-17 16:34:57,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:57,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:57,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:57,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:34:57,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:57,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:57,837 INFO L85 PathProgramCache]: Analyzing trace with hash 883748920, now seen corresponding path program 2 times [2023-11-17 16:34:57,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:57,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853048328] [2023-11-17 16:34:57,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:57,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:58,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:58,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:58,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853048328] [2023-11-17 16:34:58,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853048328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:34:58,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:34:58,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:34:58,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908020462] [2023-11-17 16:34:58,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:34:58,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:34:58,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:58,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:34:58,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:34:58,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:34:58,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:58,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:34:58,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:58,178 INFO L124 PetriNetUnfolderBase]: 96/166 cut-off events. [2023-11-17 16:34:58,178 INFO L125 PetriNetUnfolderBase]: For 77/77 co-relation queries the response was YES. [2023-11-17 16:34:58,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 166 events. 96/166 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 470 event pairs, 11 based on Foata normal form. 1/167 useless extension candidates. Maximal degree in co-relation 499. Up to 69 conditions per place. [2023-11-17 16:34:58,183 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 39 selfloop transitions, 14 changer transitions 5/58 dead transitions. [2023-11-17 16:34:58,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 58 transitions, 333 flow [2023-11-17 16:34:58,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:34:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:34:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 456 transitions. [2023-11-17 16:34:58,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175824175824176 [2023-11-17 16:34:58,189 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 456 transitions. [2023-11-17 16:34:58,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 456 transitions. [2023-11-17 16:34:58,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:58,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 456 transitions. [2023-11-17 16:34:58,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.14285714285714) internal successors, (456), 7 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,195 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,195 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 101 flow. Second operand 7 states and 456 transitions. [2023-11-17 16:34:58,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 58 transitions, 333 flow [2023-11-17 16:34:58,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 58 transitions, 325 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 16:34:58,199 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 198 flow [2023-11-17 16:34:58,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-11-17 16:34:58,200 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 16 predicate places. [2023-11-17 16:34:58,201 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 198 flow [2023-11-17 16:34:58,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:58,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:58,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:34:58,202 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:58,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:58,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1705923722, now seen corresponding path program 3 times [2023-11-17 16:34:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:58,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538822987] [2023-11-17 16:34:58,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:58,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:58,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:58,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538822987] [2023-11-17 16:34:58,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538822987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:34:58,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:34:58,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:34:58,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420406763] [2023-11-17 16:34:58,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:34:58,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:34:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:34:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:34:58,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:34:58,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:58,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:34:58,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:58,528 INFO L124 PetriNetUnfolderBase]: 106/182 cut-off events. [2023-11-17 16:34:58,528 INFO L125 PetriNetUnfolderBase]: For 295/295 co-relation queries the response was YES. [2023-11-17 16:34:58,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 182 events. 106/182 cut-off events. For 295/295 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 525 event pairs, 19 based on Foata normal form. 1/183 useless extension candidates. Maximal degree in co-relation 716. Up to 106 conditions per place. [2023-11-17 16:34:58,530 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 34 selfloop transitions, 17 changer transitions 5/56 dead transitions. [2023-11-17 16:34:58,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 415 flow [2023-11-17 16:34:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:34:58,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:34:58,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 451 transitions. [2023-11-17 16:34:58,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413003663003663 [2023-11-17 16:34:58,533 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 451 transitions. [2023-11-17 16:34:58,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 451 transitions. [2023-11-17 16:34:58,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:58,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 451 transitions. [2023-11-17 16:34:58,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,537 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,537 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 198 flow. Second operand 7 states and 451 transitions. [2023-11-17 16:34:58,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 415 flow [2023-11-17 16:34:58,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 56 transitions, 377 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-11-17 16:34:58,541 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 270 flow [2023-11-17 16:34:58,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=270, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-17 16:34:58,542 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 23 predicate places. [2023-11-17 16:34:58,542 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 270 flow [2023-11-17 16:34:58,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:58,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:58,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:34:58,543 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:58,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:58,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2052043392, now seen corresponding path program 4 times [2023-11-17 16:34:58,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:58,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412010609] [2023-11-17 16:34:58,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:58,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:58,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:58,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412010609] [2023-11-17 16:34:58,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412010609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:34:58,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:34:58,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:34:58,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076028028] [2023-11-17 16:34:58,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:34:58,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:34:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:58,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:34:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:34:58,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:34:58,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:58,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:34:58,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:58,786 INFO L124 PetriNetUnfolderBase]: 109/189 cut-off events. [2023-11-17 16:34:58,786 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2023-11-17 16:34:58,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 804 conditions, 189 events. 109/189 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 563 event pairs, 13 based on Foata normal form. 1/190 useless extension candidates. Maximal degree in co-relation 785. Up to 113 conditions per place. [2023-11-17 16:34:58,788 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 37 selfloop transitions, 19 changer transitions 5/61 dead transitions. [2023-11-17 16:34:58,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 483 flow [2023-11-17 16:34:58,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:34:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:34:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 453 transitions. [2023-11-17 16:34:58,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41483516483516486 [2023-11-17 16:34:58,790 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 453 transitions. [2023-11-17 16:34:58,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 453 transitions. [2023-11-17 16:34:58,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:58,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 453 transitions. [2023-11-17 16:34:58,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.71428571428571) internal successors, (453), 7 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,794 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,794 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 270 flow. Second operand 7 states and 453 transitions. [2023-11-17 16:34:58,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 483 flow [2023-11-17 16:34:58,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 61 transitions, 443 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 16:34:58,798 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 325 flow [2023-11-17 16:34:58,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-17 16:34:58,799 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2023-11-17 16:34:58,799 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 325 flow [2023-11-17 16:34:58,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:58,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:58,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:34:58,800 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:58,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:58,800 INFO L85 PathProgramCache]: Analyzing trace with hash 380760646, now seen corresponding path program 5 times [2023-11-17 16:34:58,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:58,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255199932] [2023-11-17 16:34:58,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:58,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255199932] [2023-11-17 16:34:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255199932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:34:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:34:58,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:34:58,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376329045] [2023-11-17 16:34:58,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:34:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:34:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:58,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:34:58,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:34:58,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:34:58,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:58,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:58,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:34:58,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:59,023 INFO L124 PetriNetUnfolderBase]: 108/190 cut-off events. [2023-11-17 16:34:59,023 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2023-11-17 16:34:59,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 190 events. 108/190 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 577 event pairs, 13 based on Foata normal form. 1/191 useless extension candidates. Maximal degree in co-relation 845. Up to 118 conditions per place. [2023-11-17 16:34:59,025 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 36 selfloop transitions, 19 changer transitions 5/60 dead transitions. [2023-11-17 16:34:59,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 60 transitions, 510 flow [2023-11-17 16:34:59,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:34:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:34:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 451 transitions. [2023-11-17 16:34:59,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.413003663003663 [2023-11-17 16:34:59,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 451 transitions. [2023-11-17 16:34:59,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 451 transitions. [2023-11-17 16:34:59,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:59,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 451 transitions. [2023-11-17 16:34:59,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.42857142857143) internal successors, (451), 7 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,031 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,031 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 325 flow. Second operand 7 states and 451 transitions. [2023-11-17 16:34:59,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 60 transitions, 510 flow [2023-11-17 16:34:59,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 466 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-11-17 16:34:59,035 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 333 flow [2023-11-17 16:34:59,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-11-17 16:34:59,036 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 31 predicate places. [2023-11-17 16:34:59,036 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 333 flow [2023-11-17 16:34:59,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:59,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:59,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:34:59,037 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:59,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2128242006, now seen corresponding path program 6 times [2023-11-17 16:34:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147947804] [2023-11-17 16:34:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:59,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:59,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147947804] [2023-11-17 16:34:59,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147947804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:34:59,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:34:59,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:34:59,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464863570] [2023-11-17 16:34:59,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:34:59,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:34:59,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:59,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:34:59,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:34:59,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:34:59,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 333 flow. Second operand has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:59,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:34:59,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:59,249 INFO L124 PetriNetUnfolderBase]: 119/207 cut-off events. [2023-11-17 16:34:59,250 INFO L125 PetriNetUnfolderBase]: For 531/531 co-relation queries the response was YES. [2023-11-17 16:34:59,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 207 events. 119/207 cut-off events. For 531/531 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 619 event pairs, 14 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 935. Up to 125 conditions per place. [2023-11-17 16:34:59,253 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 38 selfloop transitions, 24 changer transitions 6/68 dead transitions. [2023-11-17 16:34:59,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 68 transitions, 619 flow [2023-11-17 16:34:59,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:34:59,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:34:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 447 transitions. [2023-11-17 16:34:59,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40934065934065933 [2023-11-17 16:34:59,255 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 447 transitions. [2023-11-17 16:34:59,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 447 transitions. [2023-11-17 16:34:59,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:59,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 447 transitions. [2023-11-17 16:34:59,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 63.857142857142854) internal successors, (447), 7 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,258 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,259 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 333 flow. Second operand 7 states and 447 transitions. [2023-11-17 16:34:59,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 68 transitions, 619 flow [2023-11-17 16:34:59,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 561 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-17 16:34:59,263 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 449 flow [2023-11-17 16:34:59,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-11-17 16:34:59,264 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 35 predicate places. [2023-11-17 16:34:59,264 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 449 flow [2023-11-17 16:34:59,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 59.857142857142854) internal successors, (419), 7 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:59,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:59,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 16:34:59,265 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:59,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:59,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1604787439, now seen corresponding path program 1 times [2023-11-17 16:34:59,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:59,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902927850] [2023-11-17 16:34:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:59,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:59,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:59,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:59,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902927850] [2023-11-17 16:34:59,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902927850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:34:59,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16666573] [2023-11-17 16:34:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:59,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:34:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:34:59,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:34:59,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 16:34:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:59,406 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 16:34:59,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:34:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:59,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:34:59,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:59,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16666573] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:34:59,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:34:59,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2023-11-17 16:34:59,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374249230] [2023-11-17 16:34:59,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:34:59,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:34:59,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:59,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:34:59,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:34:59,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:34:59,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:59,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:34:59,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:59,593 INFO L124 PetriNetUnfolderBase]: 126/223 cut-off events. [2023-11-17 16:34:59,594 INFO L125 PetriNetUnfolderBase]: For 743/743 co-relation queries the response was YES. [2023-11-17 16:34:59,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1120 conditions, 223 events. 126/223 cut-off events. For 743/743 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 718 event pairs, 10 based on Foata normal form. 6/229 useless extension candidates. Maximal degree in co-relation 1091. Up to 102 conditions per place. [2023-11-17 16:34:59,597 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 60 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2023-11-17 16:34:59,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 77 transitions, 757 flow [2023-11-17 16:34:59,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:34:59,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:34:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 340 transitions. [2023-11-17 16:34:59,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4358974358974359 [2023-11-17 16:34:59,598 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 340 transitions. [2023-11-17 16:34:59,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 340 transitions. [2023-11-17 16:34:59,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:59,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 340 transitions. [2023-11-17 16:34:59,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,602 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,602 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 449 flow. Second operand 5 states and 340 transitions. [2023-11-17 16:34:59,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 77 transitions, 757 flow [2023-11-17 16:34:59,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 77 transitions, 716 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-17 16:34:59,606 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 529 flow [2023-11-17 16:34:59,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-11-17 16:34:59,607 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 39 predicate places. [2023-11-17 16:34:59,607 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 529 flow [2023-11-17 16:34:59,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:59,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:59,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 16:34:59,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:34:59,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:59,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:59,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1680884181, now seen corresponding path program 1 times [2023-11-17 16:34:59,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:59,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318589026] [2023-11-17 16:34:59,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:59,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:34:59,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:34:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:34:59,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:34:59,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318589026] [2023-11-17 16:34:59,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318589026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:34:59,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:34:59,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:34:59,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593622205] [2023-11-17 16:34:59,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:34:59,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:34:59,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:34:59,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:34:59,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:34:59,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:34:59,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 529 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:34:59,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:34:59,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:34:59,976 INFO L124 PetriNetUnfolderBase]: 122/219 cut-off events. [2023-11-17 16:34:59,976 INFO L125 PetriNetUnfolderBase]: For 1133/1133 co-relation queries the response was YES. [2023-11-17 16:34:59,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1158 conditions, 219 events. 122/219 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 710 event pairs, 17 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 1001. Up to 83 conditions per place. [2023-11-17 16:34:59,978 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 46 selfloop transitions, 26 changer transitions 4/76 dead transitions. [2023-11-17 16:34:59,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 76 transitions, 763 flow [2023-11-17 16:34:59,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:34:59,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:34:59,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 466 transitions. [2023-11-17 16:34:59,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267399267399267 [2023-11-17 16:34:59,980 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 466 transitions. [2023-11-17 16:34:59,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 466 transitions. [2023-11-17 16:34:59,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:34:59,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 466 transitions. [2023-11-17 16:34:59,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,984 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,984 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 529 flow. Second operand 7 states and 466 transitions. [2023-11-17 16:34:59,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 76 transitions, 763 flow [2023-11-17 16:34:59,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 76 transitions, 736 flow, removed 11 selfloop flow, removed 1 redundant places. [2023-11-17 16:34:59,990 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 556 flow [2023-11-17 16:34:59,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-17 16:34:59,991 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 45 predicate places. [2023-11-17 16:34:59,991 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 556 flow [2023-11-17 16:34:59,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:34:59,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:34:59,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:34:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 16:34:59,992 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:34:59,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:34:59,992 INFO L85 PathProgramCache]: Analyzing trace with hash -842902647, now seen corresponding path program 2 times [2023-11-17 16:34:59,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:34:59,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563054927] [2023-11-17 16:34:59,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:34:59,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:00,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:00,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563054927] [2023-11-17 16:35:00,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563054927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:00,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:00,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:00,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987259782] [2023-11-17 16:35:00,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:00,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:00,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:00,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:00,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:00,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:00,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 556 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:00,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:00,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:00,130 INFO L124 PetriNetUnfolderBase]: 134/241 cut-off events. [2023-11-17 16:35:00,130 INFO L125 PetriNetUnfolderBase]: For 1138/1138 co-relation queries the response was YES. [2023-11-17 16:35:00,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1298 conditions, 241 events. 134/241 cut-off events. For 1138/1138 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 792 event pairs, 6 based on Foata normal form. 6/247 useless extension candidates. Maximal degree in co-relation 1190. Up to 167 conditions per place. [2023-11-17 16:35:00,133 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 59 selfloop transitions, 19 changer transitions 0/78 dead transitions. [2023-11-17 16:35:00,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 78 transitions, 870 flow [2023-11-17 16:35:00,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:35:00,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:35:00,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 337 transitions. [2023-11-17 16:35:00,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205128205128207 [2023-11-17 16:35:00,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 337 transitions. [2023-11-17 16:35:00,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 337 transitions. [2023-11-17 16:35:00,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:00,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 337 transitions. [2023-11-17 16:35:00,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,138 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,138 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 556 flow. Second operand 5 states and 337 transitions. [2023-11-17 16:35:00,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 78 transitions, 870 flow [2023-11-17 16:35:00,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 78 transitions, 789 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-17 16:35:00,144 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 592 flow [2023-11-17 16:35:00,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=592, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-11-17 16:35:00,145 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 44 predicate places. [2023-11-17 16:35:00,145 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 592 flow [2023-11-17 16:35:00,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:00,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:00,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 16:35:00,146 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:00,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:00,146 INFO L85 PathProgramCache]: Analyzing trace with hash -890934141, now seen corresponding path program 3 times [2023-11-17 16:35:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:00,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360910906] [2023-11-17 16:35:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:00,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:00,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:00,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360910906] [2023-11-17 16:35:00,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360910906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:00,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:00,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:00,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746973646] [2023-11-17 16:35:00,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:00,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:00,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:00,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:00,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:00,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:00,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 592 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:00,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:00,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:00,322 INFO L124 PetriNetUnfolderBase]: 142/261 cut-off events. [2023-11-17 16:35:00,322 INFO L125 PetriNetUnfolderBase]: For 1311/1311 co-relation queries the response was YES. [2023-11-17 16:35:00,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1400 conditions, 261 events. 142/261 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 903 event pairs, 10 based on Foata normal form. 2/263 useless extension candidates. Maximal degree in co-relation 1294. Up to 87 conditions per place. [2023-11-17 16:35:00,325 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 54 selfloop transitions, 25 changer transitions 1/80 dead transitions. [2023-11-17 16:35:00,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 80 transitions, 887 flow [2023-11-17 16:35:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:35:00,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:35:00,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 400 transitions. [2023-11-17 16:35:00,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2023-11-17 16:35:00,327 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 400 transitions. [2023-11-17 16:35:00,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 400 transitions. [2023-11-17 16:35:00,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:00,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 400 transitions. [2023-11-17 16:35:00,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,331 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,331 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 592 flow. Second operand 6 states and 400 transitions. [2023-11-17 16:35:00,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 80 transitions, 887 flow [2023-11-17 16:35:00,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 860 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-17 16:35:00,338 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 628 flow [2023-11-17 16:35:00,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=628, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2023-11-17 16:35:00,339 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places. [2023-11-17 16:35:00,339 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 628 flow [2023-11-17 16:35:00,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:00,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:00,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 16:35:00,340 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:00,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:00,341 INFO L85 PathProgramCache]: Analyzing trace with hash -2111173501, now seen corresponding path program 2 times [2023-11-17 16:35:00,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:00,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205488064] [2023-11-17 16:35:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:00,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:00,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:00,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:00,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205488064] [2023-11-17 16:35:00,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205488064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:00,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:00,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:00,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269296559] [2023-11-17 16:35:00,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:00,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:00,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:00,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:00,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:00,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:00,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 628 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:00,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:00,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:00,526 INFO L124 PetriNetUnfolderBase]: 154/295 cut-off events. [2023-11-17 16:35:00,526 INFO L125 PetriNetUnfolderBase]: For 1744/1744 co-relation queries the response was YES. [2023-11-17 16:35:00,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 295 events. 154/295 cut-off events. For 1744/1744 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1108 event pairs, 26 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1508. Up to 120 conditions per place. [2023-11-17 16:35:00,529 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 69 selfloop transitions, 25 changer transitions 1/95 dead transitions. [2023-11-17 16:35:00,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 95 transitions, 1027 flow [2023-11-17 16:35:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:35:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:35:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 539 transitions. [2023-11-17 16:35:00,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43189102564102566 [2023-11-17 16:35:00,532 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 539 transitions. [2023-11-17 16:35:00,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 539 transitions. [2023-11-17 16:35:00,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:00,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 539 transitions. [2023-11-17 16:35:00,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,537 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,537 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 628 flow. Second operand 8 states and 539 transitions. [2023-11-17 16:35:00,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 95 transitions, 1027 flow [2023-11-17 16:35:00,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 95 transitions, 972 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-17 16:35:00,546 INFO L231 Difference]: Finished difference. Result has 75 places, 63 transitions, 703 flow [2023-11-17 16:35:00,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=703, PETRI_PLACES=75, PETRI_TRANSITIONS=63} [2023-11-17 16:35:00,546 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-11-17 16:35:00,546 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 63 transitions, 703 flow [2023-11-17 16:35:00,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:00,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:00,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 16:35:00,547 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:00,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:00,548 INFO L85 PathProgramCache]: Analyzing trace with hash -2110578855, now seen corresponding path program 3 times [2023-11-17 16:35:00,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:00,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027045469] [2023-11-17 16:35:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:00,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:00,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027045469] [2023-11-17 16:35:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027045469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:00,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:00,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603343574] [2023-11-17 16:35:00,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:00,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:00,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:00,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:00,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:00,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:00,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 63 transitions, 703 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:00,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:00,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:00,693 INFO L124 PetriNetUnfolderBase]: 147/274 cut-off events. [2023-11-17 16:35:00,694 INFO L125 PetriNetUnfolderBase]: For 1841/1841 co-relation queries the response was YES. [2023-11-17 16:35:00,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 274 events. 147/274 cut-off events. For 1841/1841 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 958 event pairs, 37 based on Foata normal form. 4/278 useless extension candidates. Maximal degree in co-relation 1466. Up to 183 conditions per place. [2023-11-17 16:35:00,696 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 57 selfloop transitions, 16 changer transitions 0/73 dead transitions. [2023-11-17 16:35:00,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 73 transitions, 891 flow [2023-11-17 16:35:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:35:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:35:00,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 335 transitions. [2023-11-17 16:35:00,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42948717948717946 [2023-11-17 16:35:00,698 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 335 transitions. [2023-11-17 16:35:00,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 335 transitions. [2023-11-17 16:35:00,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:00,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 335 transitions. [2023-11-17 16:35:00,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.0) internal successors, (335), 5 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,701 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,701 INFO L175 Difference]: Start difference. First operand has 75 places, 63 transitions, 703 flow. Second operand 5 states and 335 transitions. [2023-11-17 16:35:00,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 73 transitions, 891 flow [2023-11-17 16:35:00,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 828 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-17 16:35:00,710 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 659 flow [2023-11-17 16:35:00,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=659, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2023-11-17 16:35:00,712 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 53 predicate places. [2023-11-17 16:35:00,712 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 659 flow [2023-11-17 16:35:00,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:00,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:00,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 16:35:00,713 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:00,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:00,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1992302083, now seen corresponding path program 4 times [2023-11-17 16:35:00,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:00,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662357238] [2023-11-17 16:35:00,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:00,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:00,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:00,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662357238] [2023-11-17 16:35:00,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662357238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:00,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652081773] [2023-11-17 16:35:00,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:35:00,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:00,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:00,761 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:00,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 16:35:00,833 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:35:00,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:35:00,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 16:35:00,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:00,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:00,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:00,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652081773] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:00,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:35:00,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2023-11-17 16:35:00,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024017306] [2023-11-17 16:35:00,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:00,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:00,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:00,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:00,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:35:00,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:00,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 659 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:00,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:00,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:00,973 INFO L124 PetriNetUnfolderBase]: 156/303 cut-off events. [2023-11-17 16:35:00,973 INFO L125 PetriNetUnfolderBase]: For 1599/1599 co-relation queries the response was YES. [2023-11-17 16:35:00,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1620 conditions, 303 events. 156/303 cut-off events. For 1599/1599 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1151 event pairs, 11 based on Foata normal form. 6/309 useless extension candidates. Maximal degree in co-relation 1526. Up to 160 conditions per place. [2023-11-17 16:35:00,977 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 59 selfloop transitions, 21 changer transitions 0/80 dead transitions. [2023-11-17 16:35:00,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 80 transitions, 951 flow [2023-11-17 16:35:00,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:35:00,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:35:00,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2023-11-17 16:35:00,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307692307692308 [2023-11-17 16:35:00,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 336 transitions. [2023-11-17 16:35:00,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 336 transitions. [2023-11-17 16:35:00,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:00,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 336 transitions. [2023-11-17 16:35:00,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.2) internal successors, (336), 5 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,984 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,984 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 659 flow. Second operand 5 states and 336 transitions. [2023-11-17 16:35:00,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 80 transitions, 951 flow [2023-11-17 16:35:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 914 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:35:00,992 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 734 flow [2023-11-17 16:35:00,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=734, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-11-17 16:35:00,994 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 56 predicate places. [2023-11-17 16:35:00,994 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 734 flow [2023-11-17 16:35:00,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:00,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:00,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:01,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:01,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 16:35:01,200 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:01,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:01,201 INFO L85 PathProgramCache]: Analyzing trace with hash 881911291, now seen corresponding path program 4 times [2023-11-17 16:35:01,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:01,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321451538] [2023-11-17 16:35:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:01,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:01,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:01,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321451538] [2023-11-17 16:35:01,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321451538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:01,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:01,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:01,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548886414] [2023-11-17 16:35:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:01,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:01,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:01,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:01,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:01,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 734 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:01,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:01,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:01,388 INFO L124 PetriNetUnfolderBase]: 148/287 cut-off events. [2023-11-17 16:35:01,388 INFO L125 PetriNetUnfolderBase]: For 1918/1918 co-relation queries the response was YES. [2023-11-17 16:35:01,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1624 conditions, 287 events. 148/287 cut-off events. For 1918/1918 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1066 event pairs, 39 based on Foata normal form. 6/293 useless extension candidates. Maximal degree in co-relation 1530. Up to 209 conditions per place. [2023-11-17 16:35:01,391 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 57 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2023-11-17 16:35:01,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 78 transitions, 949 flow [2023-11-17 16:35:01,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:35:01,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:35:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 339 transitions. [2023-11-17 16:35:01,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346153846153846 [2023-11-17 16:35:01,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 339 transitions. [2023-11-17 16:35:01,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 339 transitions. [2023-11-17 16:35:01,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:01,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 339 transitions. [2023-11-17 16:35:01,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,396 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 734 flow. Second operand 5 states and 339 transitions. [2023-11-17 16:35:01,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 78 transitions, 949 flow [2023-11-17 16:35:01,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 913 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 16:35:01,404 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 762 flow [2023-11-17 16:35:01,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=762, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2023-11-17 16:35:01,405 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 57 predicate places. [2023-11-17 16:35:01,405 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 762 flow [2023-11-17 16:35:01,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:01,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:01,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 16:35:01,406 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:01,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:01,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1168835909, now seen corresponding path program 5 times [2023-11-17 16:35:01,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:01,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899492626] [2023-11-17 16:35:01,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:01,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:01,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899492626] [2023-11-17 16:35:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899492626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:01,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:01,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:01,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589296955] [2023-11-17 16:35:01,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:01,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:01,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:01,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:01,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:01,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:01,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 762 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:01,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:01,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:01,544 INFO L124 PetriNetUnfolderBase]: 139/270 cut-off events. [2023-11-17 16:35:01,544 INFO L125 PetriNetUnfolderBase]: For 1693/1693 co-relation queries the response was YES. [2023-11-17 16:35:01,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 270 events. 139/270 cut-off events. For 1693/1693 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 986 event pairs, 9 based on Foata normal form. 4/274 useless extension candidates. Maximal degree in co-relation 1452. Up to 179 conditions per place. [2023-11-17 16:35:01,547 INFO L140 encePairwiseOnDemand]: 151/156 looper letters, 57 selfloop transitions, 21 changer transitions 0/78 dead transitions. [2023-11-17 16:35:01,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 78 transitions, 960 flow [2023-11-17 16:35:01,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:35:01,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:35:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 337 transitions. [2023-11-17 16:35:01,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43205128205128207 [2023-11-17 16:35:01,549 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 337 transitions. [2023-11-17 16:35:01,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 337 transitions. [2023-11-17 16:35:01,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:01,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 337 transitions. [2023-11-17 16:35:01,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,552 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 156.0) internal successors, (936), 6 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,552 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 762 flow. Second operand 5 states and 337 transitions. [2023-11-17 16:35:01,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 78 transitions, 960 flow [2023-11-17 16:35:01,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 78 transitions, 907 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 16:35:01,560 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 752 flow [2023-11-17 16:35:01,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=752, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2023-11-17 16:35:01,561 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 58 predicate places. [2023-11-17 16:35:01,561 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 752 flow [2023-11-17 16:35:01,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:01,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:01,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 16:35:01,562 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:01,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:01,562 INFO L85 PathProgramCache]: Analyzing trace with hash 849205761, now seen corresponding path program 5 times [2023-11-17 16:35:01,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:01,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588853439] [2023-11-17 16:35:01,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:01,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:01,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588853439] [2023-11-17 16:35:01,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588853439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:01,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:01,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:01,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536778453] [2023-11-17 16:35:01,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:01,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:01,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:01,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:01,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:01,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:01,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:01,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:01,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:01,695 INFO L124 PetriNetUnfolderBase]: 137/268 cut-off events. [2023-11-17 16:35:01,695 INFO L125 PetriNetUnfolderBase]: For 1682/1682 co-relation queries the response was YES. [2023-11-17 16:35:01,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1527 conditions, 268 events. 137/268 cut-off events. For 1682/1682 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 991 event pairs, 26 based on Foata normal form. 2/270 useless extension candidates. Maximal degree in co-relation 1462. Up to 104 conditions per place. [2023-11-17 16:35:01,698 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 54 selfloop transitions, 24 changer transitions 2/80 dead transitions. [2023-11-17 16:35:01,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 80 transitions, 961 flow [2023-11-17 16:35:01,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:35:01,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:35:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 461 transitions. [2023-11-17 16:35:01,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42216117216117216 [2023-11-17 16:35:01,700 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 461 transitions. [2023-11-17 16:35:01,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 461 transitions. [2023-11-17 16:35:01,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:01,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 461 transitions. [2023-11-17 16:35:01,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.85714285714286) internal successors, (461), 7 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,703 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,703 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 752 flow. Second operand 7 states and 461 transitions. [2023-11-17 16:35:01,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 80 transitions, 961 flow [2023-11-17 16:35:01,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 80 transitions, 950 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 16:35:01,711 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 742 flow [2023-11-17 16:35:01,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2023-11-17 16:35:01,711 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 62 predicate places. [2023-11-17 16:35:01,712 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 742 flow [2023-11-17 16:35:01,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:01,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:01,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 16:35:01,712 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:01,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:01,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1741380467, now seen corresponding path program 6 times [2023-11-17 16:35:01,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:01,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019007099] [2023-11-17 16:35:01,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:01,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:01,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:01,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019007099] [2023-11-17 16:35:01,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019007099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:01,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:01,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845803528] [2023-11-17 16:35:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:01,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:01,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:01,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:01,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:01,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:01,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 742 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:01,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:01,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:01,872 INFO L124 PetriNetUnfolderBase]: 131/250 cut-off events. [2023-11-17 16:35:01,872 INFO L125 PetriNetUnfolderBase]: For 1579/1579 co-relation queries the response was YES. [2023-11-17 16:35:01,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1496 conditions, 250 events. 131/250 cut-off events. For 1579/1579 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 863 event pairs, 20 based on Foata normal form. 2/252 useless extension candidates. Maximal degree in co-relation 1304. Up to 104 conditions per place. [2023-11-17 16:35:01,875 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 55 selfloop transitions, 24 changer transitions 1/80 dead transitions. [2023-11-17 16:35:01,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 961 flow [2023-11-17 16:35:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:35:01,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:35:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 527 transitions. [2023-11-17 16:35:01,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.422275641025641 [2023-11-17 16:35:01,877 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 527 transitions. [2023-11-17 16:35:01,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 527 transitions. [2023-11-17 16:35:01,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:01,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 527 transitions. [2023-11-17 16:35:01,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 65.875) internal successors, (527), 8 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,881 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,881 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 742 flow. Second operand 8 states and 527 transitions. [2023-11-17 16:35:01,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 961 flow [2023-11-17 16:35:01,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 80 transitions, 935 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 16:35:01,888 INFO L231 Difference]: Finished difference. Result has 85 places, 59 transitions, 723 flow [2023-11-17 16:35:01,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=723, PETRI_PLACES=85, PETRI_TRANSITIONS=59} [2023-11-17 16:35:01,889 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2023-11-17 16:35:01,889 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 59 transitions, 723 flow [2023-11-17 16:35:01,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:01,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:01,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-17 16:35:01,889 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:01,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash -799647683, now seen corresponding path program 6 times [2023-11-17 16:35:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452439279] [2023-11-17 16:35:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:01,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:01,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:01,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452439279] [2023-11-17 16:35:01,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452439279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:01,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:35:01,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:35:01,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782292874] [2023-11-17 16:35:01,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:01,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:35:01,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:35:01,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:35:01,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 156 [2023-11-17 16:35:01,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 59 transitions, 723 flow. Second operand has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:01,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:01,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 156 [2023-11-17 16:35:01,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:02,029 INFO L124 PetriNetUnfolderBase]: 120/227 cut-off events. [2023-11-17 16:35:02,030 INFO L125 PetriNetUnfolderBase]: For 1645/1645 co-relation queries the response was YES. [2023-11-17 16:35:02,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 227 events. 120/227 cut-off events. For 1645/1645 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 749 event pairs, 9 based on Foata normal form. 4/231 useless extension candidates. Maximal degree in co-relation 1220. Up to 111 conditions per place. [2023-11-17 16:35:02,032 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 54 selfloop transitions, 18 changer transitions 1/73 dead transitions. [2023-11-17 16:35:02,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 73 transitions, 924 flow [2023-11-17 16:35:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:35:02,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:35:02,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 400 transitions. [2023-11-17 16:35:02,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42735042735042733 [2023-11-17 16:35:02,034 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 400 transitions. [2023-11-17 16:35:02,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 400 transitions. [2023-11-17 16:35:02,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:02,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 400 transitions. [2023-11-17 16:35:02,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 66.66666666666667) internal successors, (400), 6 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,037 INFO L175 Difference]: Start difference. First operand has 85 places, 59 transitions, 723 flow. Second operand 6 states and 400 transitions. [2023-11-17 16:35:02,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 73 transitions, 924 flow [2023-11-17 16:35:02,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 73 transitions, 838 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-17 16:35:02,044 INFO L231 Difference]: Finished difference. Result has 79 places, 56 transitions, 641 flow [2023-11-17 16:35:02,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=641, PETRI_PLACES=79, PETRI_TRANSITIONS=56} [2023-11-17 16:35:02,044 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 59 predicate places. [2023-11-17 16:35:02,045 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 56 transitions, 641 flow [2023-11-17 16:35:02,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.8) internal successors, (314), 5 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:02,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:02,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 16:35:02,045 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:02,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:02,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1425896068, now seen corresponding path program 1 times [2023-11-17 16:35:02,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:02,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613947020] [2023-11-17 16:35:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:02,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:02,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613947020] [2023-11-17 16:35:02,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613947020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:02,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124996056] [2023-11-17 16:35:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:02,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:02,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:02,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:02,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 16:35:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:02,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:35:02,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:02,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:02,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:02,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124996056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:35:02,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:35:02,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-17 16:35:02,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035827345] [2023-11-17 16:35:02,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:35:02,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:35:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:02,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:35:02,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:35:02,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:35:02,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 56 transitions, 641 flow. Second operand has 19 states, 19 states have (on average 59.8421052631579) internal successors, (1137), 19 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:02,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:35:02,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:02,896 INFO L124 PetriNetUnfolderBase]: 122/228 cut-off events. [2023-11-17 16:35:02,896 INFO L125 PetriNetUnfolderBase]: For 1399/1399 co-relation queries the response was YES. [2023-11-17 16:35:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 228 events. 122/228 cut-off events. For 1399/1399 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 756 event pairs, 2 based on Foata normal form. 1/229 useless extension candidates. Maximal degree in co-relation 1130. Up to 51 conditions per place. [2023-11-17 16:35:02,898 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 42 selfloop transitions, 22 changer transitions 25/89 dead transitions. [2023-11-17 16:35:02,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 89 transitions, 979 flow [2023-11-17 16:35:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:35:02,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:35:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 697 transitions. [2023-11-17 16:35:02,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40617715617715616 [2023-11-17 16:35:02,901 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 697 transitions. [2023-11-17 16:35:02,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 697 transitions. [2023-11-17 16:35:02,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:02,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 697 transitions. [2023-11-17 16:35:02,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 63.36363636363637) internal successors, (697), 11 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,906 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,907 INFO L175 Difference]: Start difference. First operand has 79 places, 56 transitions, 641 flow. Second operand 11 states and 697 transitions. [2023-11-17 16:35:02,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 89 transitions, 979 flow [2023-11-17 16:35:02,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 89 transitions, 952 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:35:02,913 INFO L231 Difference]: Finished difference. Result has 85 places, 48 transitions, 584 flow [2023-11-17 16:35:02,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=584, PETRI_PLACES=85, PETRI_TRANSITIONS=48} [2023-11-17 16:35:02,913 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 65 predicate places. [2023-11-17 16:35:02,913 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 48 transitions, 584 flow [2023-11-17 16:35:02,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 59.8421052631579) internal successors, (1137), 19 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:02,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:02,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:02,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:03,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:03,121 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:03,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:03,121 INFO L85 PathProgramCache]: Analyzing trace with hash -999051278, now seen corresponding path program 2 times [2023-11-17 16:35:03,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:03,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550424139] [2023-11-17 16:35:03,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:03,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:03,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:03,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:03,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550424139] [2023-11-17 16:35:03,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550424139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:03,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025353359] [2023-11-17 16:35:03,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:35:03,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:03,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:03,242 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:03,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 16:35:03,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:35:03,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:35:03,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:35:03,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:03,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:03,404 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:03,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:03,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025353359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:35:03,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:35:03,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 16:35:03,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836372057] [2023-11-17 16:35:03,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:35:03,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:35:03,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:03,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:35:03,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:35:03,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:35:03,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 48 transitions, 584 flow. Second operand has 18 states, 18 states have (on average 59.666666666666664) internal successors, (1074), 18 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:03,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:03,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:35:03,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:03,889 INFO L124 PetriNetUnfolderBase]: 96/188 cut-off events. [2023-11-17 16:35:03,890 INFO L125 PetriNetUnfolderBase]: For 1388/1388 co-relation queries the response was YES. [2023-11-17 16:35:03,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 188 events. 96/188 cut-off events. For 1388/1388 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 580 event pairs, 2 based on Foata normal form. 1/189 useless extension candidates. Maximal degree in co-relation 1114. Up to 47 conditions per place. [2023-11-17 16:35:03,892 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 46 selfloop transitions, 27 changer transitions 9/82 dead transitions. [2023-11-17 16:35:03,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 82 transitions, 941 flow [2023-11-17 16:35:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:35:03,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:35:03,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 696 transitions. [2023-11-17 16:35:03,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40559440559440557 [2023-11-17 16:35:03,894 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 696 transitions. [2023-11-17 16:35:03,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 696 transitions. [2023-11-17 16:35:03,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:03,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 696 transitions. [2023-11-17 16:35:03,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 63.27272727272727) internal successors, (696), 11 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:03,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:03,898 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:03,898 INFO L175 Difference]: Start difference. First operand has 85 places, 48 transitions, 584 flow. Second operand 11 states and 696 transitions. [2023-11-17 16:35:03,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 82 transitions, 941 flow [2023-11-17 16:35:03,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 82 transitions, 804 flow, removed 13 selfloop flow, removed 13 redundant places. [2023-11-17 16:35:03,904 INFO L231 Difference]: Finished difference. Result has 77 places, 51 transitions, 571 flow [2023-11-17 16:35:03,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=571, PETRI_PLACES=77, PETRI_TRANSITIONS=51} [2023-11-17 16:35:03,905 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 57 predicate places. [2023-11-17 16:35:03,905 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 51 transitions, 571 flow [2023-11-17 16:35:03,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.666666666666664) internal successors, (1074), 18 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:03,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:03,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:03,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:04,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:04,112 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:04,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash -923228378, now seen corresponding path program 3 times [2023-11-17 16:35:04,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979719884] [2023-11-17 16:35:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:04,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:04,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:04,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979719884] [2023-11-17 16:35:04,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979719884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:04,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843356203] [2023-11-17 16:35:04,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:35:04,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:04,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:04,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:04,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 16:35:04,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:35:04,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:35:04,285 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:35:04,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:04,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:04,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843356203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:35:04,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:35:04,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-17 16:35:04,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185666800] [2023-11-17 16:35:04,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:35:04,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:35:04,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:04,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:35:04,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:35:04,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:35:04,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 51 transitions, 571 flow. Second operand has 19 states, 19 states have (on average 59.421052631578945) internal successors, (1129), 19 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:04,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:04,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:35:04,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:04,844 INFO L124 PetriNetUnfolderBase]: 90/183 cut-off events. [2023-11-17 16:35:04,844 INFO L125 PetriNetUnfolderBase]: For 1014/1014 co-relation queries the response was YES. [2023-11-17 16:35:04,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 183 events. 90/183 cut-off events. For 1014/1014 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 568 event pairs, 2 based on Foata normal form. 2/185 useless extension candidates. Maximal degree in co-relation 1013. Up to 47 conditions per place. [2023-11-17 16:35:04,846 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 34 selfloop transitions, 16 changer transitions 26/76 dead transitions. [2023-11-17 16:35:04,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 76 transitions, 840 flow [2023-11-17 16:35:04,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:35:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:35:04,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 690 transitions. [2023-11-17 16:35:04,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020979020979021 [2023-11-17 16:35:04,848 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 690 transitions. [2023-11-17 16:35:04,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 690 transitions. [2023-11-17 16:35:04,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:04,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 690 transitions. [2023-11-17 16:35:04,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.72727272727273) internal successors, (690), 11 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:04,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:04,851 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:04,851 INFO L175 Difference]: Start difference. First operand has 77 places, 51 transitions, 571 flow. Second operand 11 states and 690 transitions. [2023-11-17 16:35:04,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 76 transitions, 840 flow [2023-11-17 16:35:04,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 76 transitions, 776 flow, removed 13 selfloop flow, removed 6 redundant places. [2023-11-17 16:35:04,857 INFO L231 Difference]: Finished difference. Result has 80 places, 39 transitions, 420 flow [2023-11-17 16:35:04,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=420, PETRI_PLACES=80, PETRI_TRANSITIONS=39} [2023-11-17 16:35:04,857 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2023-11-17 16:35:04,857 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 39 transitions, 420 flow [2023-11-17 16:35:04,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 59.421052631578945) internal successors, (1129), 19 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:04,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:04,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:04,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:05,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:05,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:05,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:05,064 INFO L85 PathProgramCache]: Analyzing trace with hash 578933500, now seen corresponding path program 4 times [2023-11-17 16:35:05,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:05,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578120203] [2023-11-17 16:35:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:05,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:05,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578120203] [2023-11-17 16:35:05,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578120203] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:05,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159447832] [2023-11-17 16:35:05,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:35:05,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:05,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:05,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:05,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 16:35:05,239 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:35:05,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:35:05,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:35:05,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:05,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:05,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:05,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:05,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159447832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:35:05,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:35:05,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 16:35:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782645267] [2023-11-17 16:35:05,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:35:05,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:35:05,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:05,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:35:05,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:35:05,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:35:05,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 39 transitions, 420 flow. Second operand has 16 states, 16 states have (on average 59.75) internal successors, (956), 16 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:05,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:05,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:35:05,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:06,088 INFO L124 PetriNetUnfolderBase]: 87/194 cut-off events. [2023-11-17 16:35:06,088 INFO L125 PetriNetUnfolderBase]: For 1072/1072 co-relation queries the response was YES. [2023-11-17 16:35:06,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 194 events. 87/194 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 687 event pairs, 3 based on Foata normal form. 4/198 useless extension candidates. Maximal degree in co-relation 1004. Up to 41 conditions per place. [2023-11-17 16:35:06,090 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 42 selfloop transitions, 30 changer transitions 25/97 dead transitions. [2023-11-17 16:35:06,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 97 transitions, 952 flow [2023-11-17 16:35:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 16:35:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 16:35:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1247 transitions. [2023-11-17 16:35:06,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3996794871794872 [2023-11-17 16:35:06,093 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1247 transitions. [2023-11-17 16:35:06,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1247 transitions. [2023-11-17 16:35:06,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:06,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1247 transitions. [2023-11-17 16:35:06,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 62.35) internal successors, (1247), 20 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 156.0) internal successors, (3276), 21 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,099 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 156.0) internal successors, (3276), 21 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,099 INFO L175 Difference]: Start difference. First operand has 80 places, 39 transitions, 420 flow. Second operand 20 states and 1247 transitions. [2023-11-17 16:35:06,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 97 transitions, 952 flow [2023-11-17 16:35:06,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 841 flow, removed 12 selfloop flow, removed 13 redundant places. [2023-11-17 16:35:06,104 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 563 flow [2023-11-17 16:35:06,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=563, PETRI_PLACES=86, PETRI_TRANSITIONS=50} [2023-11-17 16:35:06,105 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 66 predicate places. [2023-11-17 16:35:06,105 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 563 flow [2023-11-17 16:35:06,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 59.75) internal successors, (956), 16 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:06,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:06,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:06,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:06,312 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:06,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:06,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1514225576, now seen corresponding path program 5 times [2023-11-17 16:35:06,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:06,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132850539] [2023-11-17 16:35:06,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:06,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:06,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:06,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132850539] [2023-11-17 16:35:06,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132850539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:06,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967258474] [2023-11-17 16:35:06,427 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:35:06,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:06,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:06,429 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:06,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 16:35:06,493 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:35:06,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:35:06,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 16:35:06,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:06,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:35:06,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967258474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:35:06,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:35:06,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-17 16:35:06,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714533522] [2023-11-17 16:35:06,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:35:06,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:35:06,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:06,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:35:06,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:35:06,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 156 [2023-11-17 16:35:06,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 50 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:06,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 156 [2023-11-17 16:35:06,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:06,632 INFO L124 PetriNetUnfolderBase]: 72/147 cut-off events. [2023-11-17 16:35:06,632 INFO L125 PetriNetUnfolderBase]: For 834/834 co-relation queries the response was YES. [2023-11-17 16:35:06,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 147 events. 72/147 cut-off events. For 834/834 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 411 event pairs, 6 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 858. Up to 43 conditions per place. [2023-11-17 16:35:06,633 INFO L140 encePairwiseOnDemand]: 150/156 looper letters, 27 selfloop transitions, 10 changer transitions 23/60 dead transitions. [2023-11-17 16:35:06,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 60 transitions, 729 flow [2023-11-17 16:35:06,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:35:06,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:35:06,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 459 transitions. [2023-11-17 16:35:06,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42032967032967034 [2023-11-17 16:35:06,635 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 459 transitions. [2023-11-17 16:35:06,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 459 transitions. [2023-11-17 16:35:06,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:06,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 459 transitions. [2023-11-17 16:35:06,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 65.57142857142857) internal successors, (459), 7 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,638 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,638 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 563 flow. Second operand 7 states and 459 transitions. [2023-11-17 16:35:06,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 60 transitions, 729 flow [2023-11-17 16:35:06,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 60 transitions, 599 flow, removed 27 selfloop flow, removed 12 redundant places. [2023-11-17 16:35:06,643 INFO L231 Difference]: Finished difference. Result has 76 places, 34 transitions, 308 flow [2023-11-17 16:35:06,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=76, PETRI_TRANSITIONS=34} [2023-11-17 16:35:06,643 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 56 predicate places. [2023-11-17 16:35:06,643 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 34 transitions, 308 flow [2023-11-17 16:35:06,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 63.142857142857146) internal successors, (442), 7 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:06,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:06,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:06,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:06,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:06,850 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:06,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:06,850 INFO L85 PathProgramCache]: Analyzing trace with hash -429276910, now seen corresponding path program 6 times [2023-11-17 16:35:06,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:06,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506521685] [2023-11-17 16:35:06,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:06,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:06,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506521685] [2023-11-17 16:35:06,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506521685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:06,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737241342] [2023-11-17 16:35:06,959 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:35:06,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:06,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:06,960 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:06,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 16:35:07,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 16:35:07,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:35:07,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:35:07,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:07,103 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:07,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737241342] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:35:07,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:35:07,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 16:35:07,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375769789] [2023-11-17 16:35:07,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:35:07,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:35:07,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:07,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:35:07,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:35:07,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:35:07,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 34 transitions, 308 flow. Second operand has 16 states, 16 states have (on average 59.6875) internal successors, (955), 16 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:07,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:07,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:35:07,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:07,606 INFO L124 PetriNetUnfolderBase]: 43/97 cut-off events. [2023-11-17 16:35:07,607 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-11-17 16:35:07,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 97 events. 43/97 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 229 event pairs, 3 based on Foata normal form. 1/98 useless extension candidates. Maximal degree in co-relation 488. Up to 21 conditions per place. [2023-11-17 16:35:07,608 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 24 selfloop transitions, 17 changer transitions 12/53 dead transitions. [2023-11-17 16:35:07,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 53 transitions, 478 flow [2023-11-17 16:35:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 16:35:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 16:35:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 861 transitions. [2023-11-17 16:35:07,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2023-11-17 16:35:07,609 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 861 transitions. [2023-11-17 16:35:07,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 861 transitions. [2023-11-17 16:35:07,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:07,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 861 transitions. [2023-11-17 16:35:07,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 61.5) internal successors, (861), 14 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:07,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:07,614 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 156.0) internal successors, (2340), 15 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:07,614 INFO L175 Difference]: Start difference. First operand has 76 places, 34 transitions, 308 flow. Second operand 14 states and 861 transitions. [2023-11-17 16:35:07,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 53 transitions, 478 flow [2023-11-17 16:35:07,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 53 transitions, 414 flow, removed 7 selfloop flow, removed 13 redundant places. [2023-11-17 16:35:07,617 INFO L231 Difference]: Finished difference. Result has 67 places, 30 transitions, 246 flow [2023-11-17 16:35:07,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=246, PETRI_PLACES=67, PETRI_TRANSITIONS=30} [2023-11-17 16:35:07,617 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 47 predicate places. [2023-11-17 16:35:07,617 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 30 transitions, 246 flow [2023-11-17 16:35:07,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 59.6875) internal successors, (955), 16 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:07,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:07,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:07,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:07,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-17 16:35:07,819 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:07,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1436434808, now seen corresponding path program 7 times [2023-11-17 16:35:07,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:07,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815438458] [2023-11-17 16:35:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:07,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815438458] [2023-11-17 16:35:07,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815438458] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:07,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494951912] [2023-11-17 16:35:07,924 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:35:07,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:07,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:07,926 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:07,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 16:35:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:07,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:35:07,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:08,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:08,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494951912] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:35:08,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:35:08,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-11-17 16:35:08,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403336318] [2023-11-17 16:35:08,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:35:08,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:35:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:08,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:35:08,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:35:08,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:35:08,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 30 transitions, 246 flow. Second operand has 18 states, 18 states have (on average 59.44444444444444) internal successors, (1070), 18 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:08,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:08,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:35:08,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:08,460 INFO L124 PetriNetUnfolderBase]: 36/84 cut-off events. [2023-11-17 16:35:08,460 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2023-11-17 16:35:08,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 84 events. 36/84 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 175 event pairs, 3 based on Foata normal form. 1/85 useless extension candidates. Maximal degree in co-relation 393. Up to 21 conditions per place. [2023-11-17 16:35:08,461 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 22 selfloop transitions, 13 changer transitions 9/44 dead transitions. [2023-11-17 16:35:08,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 44 transitions, 375 flow [2023-11-17 16:35:08,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 16:35:08,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 16:35:08,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 675 transitions. [2023-11-17 16:35:08,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39335664335664333 [2023-11-17 16:35:08,462 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 675 transitions. [2023-11-17 16:35:08,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 675 transitions. [2023-11-17 16:35:08,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:08,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 675 transitions. [2023-11-17 16:35:08,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 61.36363636363637) internal successors, (675), 11 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:08,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:08,466 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:08,466 INFO L175 Difference]: Start difference. First operand has 67 places, 30 transitions, 246 flow. Second operand 11 states and 675 transitions. [2023-11-17 16:35:08,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 44 transitions, 375 flow [2023-11-17 16:35:08,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 44 transitions, 336 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-11-17 16:35:08,468 INFO L231 Difference]: Finished difference. Result has 61 places, 28 transitions, 217 flow [2023-11-17 16:35:08,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=217, PETRI_PLACES=61, PETRI_TRANSITIONS=28} [2023-11-17 16:35:08,469 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 41 predicate places. [2023-11-17 16:35:08,469 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 28 transitions, 217 flow [2023-11-17 16:35:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 59.44444444444444) internal successors, (1070), 18 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:08,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:35:08,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:35:08,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:08,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-17 16:35:08,670 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:35:08,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:35:08,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1408729178, now seen corresponding path program 8 times [2023-11-17 16:35:08,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:35:08,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019476003] [2023-11-17 16:35:08,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:35:08,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:35:08,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:35:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:08,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:35:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019476003] [2023-11-17 16:35:08,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019476003] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:35:08,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763329143] [2023-11-17 16:35:08,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:35:08,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:35:08,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:35:08,793 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:35:08,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 16:35:08,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:35:08,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:35:08,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:35:08,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:35:08,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:08,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:35:09,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:35:09,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763329143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:35:09,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:35:09,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-17 16:35:09,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861793884] [2023-11-17 16:35:09,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:35:09,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:35:09,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:35:09,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:35:09,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:35:09,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 156 [2023-11-17 16:35:09,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 28 transitions, 217 flow. Second operand has 19 states, 19 states have (on average 59.421052631578945) internal successors, (1129), 19 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:09,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:35:09,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 156 [2023-11-17 16:35:09,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:35:09,320 INFO L124 PetriNetUnfolderBase]: 32/70 cut-off events. [2023-11-17 16:35:09,320 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2023-11-17 16:35:09,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 70 events. 32/70 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 137 event pairs, 3 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 333. Up to 21 conditions per place. [2023-11-17 16:35:09,321 INFO L140 encePairwiseOnDemand]: 148/156 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2023-11-17 16:35:09,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 34 transitions, 305 flow [2023-11-17 16:35:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 16:35:09,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 16:35:09,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 549 transitions. [2023-11-17 16:35:09,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391025641025641 [2023-11-17 16:35:09,322 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 549 transitions. [2023-11-17 16:35:09,322 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 549 transitions. [2023-11-17 16:35:09,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:35:09,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 549 transitions. [2023-11-17 16:35:09,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:09,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:09,325 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 156.0) internal successors, (1560), 10 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:09,325 INFO L175 Difference]: Start difference. First operand has 61 places, 28 transitions, 217 flow. Second operand 9 states and 549 transitions. [2023-11-17 16:35:09,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 34 transitions, 305 flow [2023-11-17 16:35:09,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 34 transitions, 274 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-11-17 16:35:09,327 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-11-17 16:35:09,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-11-17 16:35:09,328 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 36 predicate places. [2023-11-17 16:35:09,328 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-11-17 16:35:09,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 59.421052631578945) internal successors, (1129), 19 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:35:09,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:35:09,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:35:09,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:35:09,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 16:35:09,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-17 16:35:09,536 INFO L445 BasicCegarLoop]: Path program histogram: [8, 6, 6, 6] [2023-11-17 16:35:09,539 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:35:09,539 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:35:09,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:35:09 BasicIcfg [2023-11-17 16:35:09,543 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:35:09,543 INFO L158 Benchmark]: Toolchain (without parser) took 15188.38ms. Allocated memory was 275.8MB in the beginning and 331.4MB in the end (delta: 55.6MB). Free memory was 223.3MB in the beginning and 178.2MB in the end (delta: 45.2MB). Peak memory consumption was 102.3MB. Max. memory is 8.0GB. [2023-11-17 16:35:09,543 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 131.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:35:09,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.73ms. Allocated memory is still 275.8MB. Free memory was 223.0MB in the beginning and 212.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-17 16:35:09,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.05ms. Allocated memory is still 275.8MB. Free memory was 212.1MB in the beginning and 210.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:35:09,544 INFO L158 Benchmark]: Boogie Preprocessor took 24.82ms. Allocated memory is still 275.8MB. Free memory was 210.4MB in the beginning and 209.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:35:09,544 INFO L158 Benchmark]: RCFGBuilder took 316.80ms. Allocated memory is still 275.8MB. Free memory was 209.3MB in the beginning and 196.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 16:35:09,544 INFO L158 Benchmark]: TraceAbstraction took 14571.75ms. Allocated memory was 275.8MB in the beginning and 331.4MB in the end (delta: 55.6MB). Free memory was 196.1MB in the beginning and 178.2MB in the end (delta: 17.9MB). Peak memory consumption was 75.1MB. Max. memory is 8.0GB. [2023-11-17 16:35:09,546 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 178.3MB. Free memory is still 131.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 223.73ms. Allocated memory is still 275.8MB. Free memory was 223.0MB in the beginning and 212.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.05ms. Allocated memory is still 275.8MB. Free memory was 212.1MB in the beginning and 210.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.82ms. Allocated memory is still 275.8MB. Free memory was 210.4MB in the beginning and 209.3MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 316.80ms. Allocated memory is still 275.8MB. Free memory was 209.3MB in the beginning and 196.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 14571.75ms. Allocated memory was 275.8MB in the beginning and 331.4MB in the end (delta: 55.6MB). Free memory was 196.1MB in the beginning and 178.2MB in the end (delta: 17.9MB). Peak memory consumption was 75.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 76 PlacesBefore, 20 PlacesAfterwards, 75 TransitionsBefore, 15 TransitionsAfterwards, 648 CoEnabledTransitionPairs, 6 FixpointIterations, 34 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 70 TotalNumberOfCompositions, 621 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 621, independent: 621, independent conditional: 0, independent unconditional: 621, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 454, independent: 454, independent conditional: 0, independent unconditional: 454, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 454, independent: 452, independent conditional: 0, independent unconditional: 452, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, independent: 2, independent conditional: 0, independent unconditional: 2, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 10, independent: 10, independent conditional: 0, independent unconditional: 10, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 621, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 454, unknown conditional: 0, unknown unconditional: 454] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 79]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 105 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.5s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 734 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 734 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4316 IncrementalHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 0 mSDtfsCounter, 4316 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 525 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 281 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 899 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=762occurred in iteration=14, InterpolantAutomatonStates: 208, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 514 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 602 ConstructedInterpolants, 0 QuantifiedInterpolants, 3223 SizeOfPredicates, 32 NumberOfNonLiveVariables, 1214 ConjunctsInSsa, 119 ConjunctsInUnsatCore, 45 InterpolantComputations, 19 PerfectInterpolantSequences, 14/62 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 16:35:09,566 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...